Weird freezing and display issues after ram upgrade and OS X upgrade.

Discussion in 'MacBook Pro' started by MobsterMac, Jan 26, 2013.

  1. MobsterMac macrumors newbie

    Jan 26, 2013
    I upgraded my ram to 8 gigs and also upgraded to Mountain Lion.

    After both of these upgrades I've noticed a significant slower than normal startup and I'm also having some freezing issues along with little pixelated squares on my display.

    What would be the recommended steps to trouble shoot these issues. I'm seriously thinking about reverting back to Snow Leopard at this point.

    MacBook Pro
    15-inch, Early 2011
    Processor 2 GHz Intel Core i7
    Memory 8 GB 1333 MHz DDR3
    Graphics AMD Radeon HD 6490M 256 MB
    Software OS X 10.8.2 (12C60)


    AMD Radeon HD 6490M:

    Chipset Model: AMD Radeon HD 6490M
    Type: GPU
    Bus: PCIe
    PCIe Lane Width: x8
    VRAM (Total): 256 MB
    Vendor: ATI (0x1002)
    Device ID: 0x6760
    Revision ID: 0x0000
    ROM Revision: 113-C0170H-521
    gMux Version: 1.9.23
    EFI Driver Version: 01.00.521
    Color LCD:
    Display Type: LCD
    Resolution: 1280 x 800
    Pixel Depth: 32-Bit Color (ARGB8888)
    Main Display: Yes
    Mirror: Off
    Online: Yes
    Built-In: Yes
    Resolution: 1280 x 960 @ 75 Hz
    Pixel Depth: 32-Bit Color (ARGB8888)
    Display Serial Number:
    Mirror: Off
    Online: Yes
    Rotation: Supported
    Adapter Type: Analog VGA Or Analog Over DVI-I
    Adapter Firmware Version: 0.00
  2. yusukeaoki macrumors 68030


    Mar 22, 2011
    Tokyo, Japan
  3. Binomio macrumors member

    Apr 20, 2012
    The little pixels on the display are usually caused by bad RAM and its not a software issue.
  4. MobsterMac thread starter macrumors newbie

    Jan 26, 2013
    Thanks guys. I'm going to look into both. Any quick tips on testing ram?
  5. Giuly macrumors 68040


  6. old-wiz macrumors G3

    Mar 26, 2008
    West Suburban Boston Ma
    I would replace the original ram and see if the problem goes away. Anytime you upgrade ram and have problems the first thing to do is always go back to original. I had to do this when I upgraded ram on both an iMac and an MBP. I tried the reseating several times but going back to original ram always fixed it. I had to get the ram replaced twice by the mfgr before it worked.
  7. tobystic macrumors newbie

    Jul 29, 2014
    I had the same problem after upgrading from 2x 1Gb to 2x 2Gb to make 4Gb. Apparently the RAMs sold to me weren't knew and I was not aware; freezing and restarting for about 5 times in 24 hours

    I carefully removed the RAMs, took my body spray (in place of methylated spirit or any ethanol) and soft toothbrush. I gently 'washed' the RAMs with it and placed them back about 10mins later

    More than a week and no freeze again!

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